**Default monitors by type:**

| Data quality metric  | Column Type |
| -------------------- | ----------- |
| `null_count`         | any         |
| `null_percent`       | any         |
| `min_length`         | string      |
| `max_length`         | string      |
| `average_length`     | string      |
| `missing_count`      | string      |
| `missing_percent`    | string      |
| `min`                | numeric     |
| `max`                | numeric     |
| `average`            | numeric     |
| `zero_count`         | numeric     |
| `zero_percent`       | numeric     |
| `standard_deviation` | numeric     |
| `variance`           | numeric     |

**Opt-in monitors by type:**

| Data quality metric | Column Type |
| ------------------- | ----------- |
| `sum`               | numeric     |
